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Commit 4f869790 authored by Isaac J. Manjarres's avatar Isaac J. Manjarres Committed by Gerrit - the friendly Code Review server
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iommu/dma-iommu: Allow dma_info_to_prot to be used globally 



The dma_info_to_prot() function is needed for drivers that
implement their own DMA operation so that the DMA directions
and attributes can be translated to IOMMU page flags, so
make it a global function.

Change-Id: I4d74f193f75801e2d481f3a2ec4044f2da2ae8aa
Signed-off-by: default avatarIsaac J. Manjarres <isaacm@codeaurora.org>
parent 944b9617

drivers/iommu/dma-iommu.c

+1 −1
Original line number Diff line number Diff line
@@ -362,7 +362,7 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, 
 *

 * Return: corresponding IOMMU API page protection flags

 */

static int dma_info_to_prot(enum dma_data_direction dir, bool coherent,

int dma_info_to_prot(enum dma_data_direction dir, bool coherent,

		     unsigned long attrs)

{

	int prot = coherent ? IOMMU_CACHE : 0;

include/linux/dma-iommu.h

+2 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ int iommu_get_dma_cookie(struct iommu_domain *domain); 
int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base);

void iommu_put_dma_cookie(struct iommu_domain *domain);



int dma_info_to_prot(enum dma_data_direction dir, bool coherent,

		     unsigned long attrs);

size_t iommu_dma_prepare_map_sg(struct device *dev, struct iova_domain *iovad,

				struct scatterlist *sg, int nents);

int iommu_dma_finalise_sg(struct device *dev, struct scatterlist *sg,